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SGA-5489 Datasheet, PDF (1/8 Pages) List of Unclassifed Manufacturers – DC-4000 MHz Silicon Germanium HBT Cascadeable Gain Block
Product Description
Stanford Microdevices’ SGA-5489 is a high performance
cascadeable 50-ohm amplifier designed for operation at
voltages as low as 3.3V. This RFIC uses the latest Silicon
Germanium Heterostructure Bipolar Transistor (SiGe HBT)
process featuring 1 micron emitters with FT up to 50 GHz.
Preliminary
SGA-5489
DC-4000 MHz Silicon Germanium HBT
Cascadeable Gain Block
This circuit uses a darlington pair topology with resistive
feedback for broadband performance as well as stability
over its entire temperature range. Internally matched to
50 ohm impedance, the SGA-5489 requires only DC
blocking and bypass capacitors for external components.
Small Signal Gain vs. Frequency
25
20
dB 15
10
5
0
1
2
3
4
5
Frequency GHz
Product Features
• DC-4000 MHz Operation
• Single Voltage Supply
• High Output Intercept: +30.8dBm typ. at 850 MHz
• Low Current Draw: 60mA at 3.3V typ.
• Low Noise Figure: 2.8dB typ. at 850 MHz
Applications
• Oscillator Amplifiers
• PA for Low Power Applications
• IF/ RF Buffer Amplifier
• Drivers for CATV Amplifiers
Symbol
Parameters: Test Conditions:
Z0 = 50 Ohms, ID = 60 mA, T = 25oC
P1dB
Output Power at 1dB Compression
f = 850 MHz
f = 1950 MHz
f = 2400 MHz
Units
dBm
dBm
dBm
Min.
Typ.
16.0
14.6
13.5
Max.
IP3
Third Order Intercept Point
Power out per tone = 0 dBm
f = 850 MHz
f = 1950 MHz
f = 2400 MHz
dBm
dBm
dBm
30.8
27.4
25.7
S21
Small Signal Gain
f = 850 MHz
dB
f = 1950 MHz
dB
f = 2400 MHz
dB
19.7
17.9
17.1
BW3dB
Bandwidth
S11
S22
3dB Bandwidth
(Determined by S11, S22 Values)
Input VSWR
Output VSWR
S12
Reverse Isolation
f = DC-5000 MHz
f = DC-5000 MHz
f = 850 MHz
f = 1950 MHz
f = 2400 MHz
MHz
MHz
-
-
dB
dB
dB
2100
4000
1.50:1
1.50:1
23.5
23.5
23.1
NF
Noise Figure, Z = 50 Ohms
S
f = 1950 MHz
dB
2.4
VD
Device Voltage
V
3.1
3.3
4.1
Rth,j-l Thermal Resistance (junction - lead)
o C/W
97
The information provided herein is believed to be reliable at press time. Stanford Microdevices assumes no responsibility for inaccuracies or omissions.
Stanford Microdevices assumes no responsibility for the use of this information, and all such information shall be entirely at the user’s own risk. Prices and specifications are subject to change
without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. Stanford Microdevices does not authorize or warrant any Stanford
Microdevices product for use in life-support devices and/or systems.
Copyright 2000 Stanford Microdevices, Inc. All worldwide rights reserved.
522 Almanor Ave., Sunnyvale, CA 94086
Phone: (800) SMI-MMIC
1
http://www.stanfordmicro.com
EDS-100618 Rev B